Lnflu A

grippe A virus Infects multiple master of ceremoniess aquatic (grab rest from crhsis) In flue pipenza A naming Virus geek origin strain moment - year of isolation virus subtype Influenza C infects pigs and benignants virtu on the wholey excuslisvng a benignant pathogen B and C Causes mild indisposition and whitethorn causes local epidemeics Antigenic drift ribonucleic acid dependent RNA polymerase No proofreading function Highly error prone 1 all 10 000 nucleotides 1 errror each cutting virion = mutant viruses andDRIFT sharp mutant change occurs in influenza A B C Antigentic Shift Reassortment event 2 different viruses or strains that ocme to hurthert to class a new viral subtypre occur sonly with flu A result of large swarm rane great breed hold of combo results in panademics (major antigenic shake) Definitons Epidemic new role of unhealthiness affects humans specific period i.

e seasonal worker influenza assumes herd immunity Pandemic = sustained circularizes of an infected disease though populations across a large area (worldwide) WHO direct 6 = pandemic which corresponds with sustained human to human spread in > 2 locations Previous pandemics 1980 killed over a one million million people Has a shift event - H571 Epizootic dease (infection we get form animals) domestic batty domestic fowls with human cases SE ASIA Fatality of 53% Factors for emeergence short housing increasing poultry production coda promixity with animals PIGS hold same receptor as humans and birds for influenza extol is one day if gets right gentic material mig! ht bother easily spread virus from human to human erect in pigs atm fear to get to humans jazz group of pig bird human , ressassortment pigs addapartment pigs reassortment in humans HIN1 -09 / swine flue pandemic The severity of illness is dependent on the host immune response and viral dynamics No evidence hini is more virulent No cross security placement with previous seasonal strains Younger patients increase risk of grave influenza as a result of immune...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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